Chapter 13 : Why Do We Fall Ill ? - Ncert Solutions for Class 9 Biology CBSE
Biology is the study of life. It is the study of living organisms and how they interact with the environment. Biology recognizes the cell as the basic unit of life, genes as the unit of heredity and evolution as an engine which boosts the formation of new species. The study of life has helped in shaping the world. It has credible answers to why things happen in a scientific manner.
TopperLearning is a platform where students of CBSE Class 9 Biology can study various behaviours of living beings and discover interesting facts as well. Let’s learn and appreciate together the diversity of nature.
Chapter 13 - Why Do We Fall Ill ? Excercise 178
(Any two points)
Chapter 13 - Why Do We Fall Ill ? Excercise 180
Chapter 13 - Why Do We Fall Ill ? Excercise 186
Concept insight: Students should remember the various means of spread of infectious diseases.
(ii) By preventing accumulation of water, anywhere in the school.
(iii) By keeping the toilet neat and clean.
(iv) By avoiding the consumption of uncovered food and other eatables.
(v) By using a handkerchief to cover the mouth while sneezing or coughing.
(vi) By using vaccines and immunization.
(vii) By spraying insecticides after every few months.
Out of these, the major health problems in our area are: Chicken pox, tuberculosis and hepatitis.
Concept insight: List of diseases against which vaccines are made.
Chapter 13 - Why Do We Fall Ill ? Excercise 188
(a) Change in my habits: Now I always make conscious efforts to remain hygienic and eat covered and neat and clean food and fruits.
(b) Change I would wish for in my surroudings: To prevent accumulation of garbage and dirty water and to keep the surroundings neat, clean and hygienic.
Concept insight: Recall the various methods of prevention.
The preventive measures that can be taken by our local authorities to bring down the incidence of these diseases are:
i. By providing fresh, clean and uncontaminated water.
ii. By providing better and hygienic sanitary conditions in the community.
iii. By spreading information about the various preventive measures by posters, pamphlets, etc.
Concept insight: Recall the various methods of prevention of diseases.
(b) As far as the sickness is concerned, we can report the symptoms which we see in the baby to the doctor and can make his own diagnosis. If need be, he can also conduct some tests for verification and then advise us about the medicines and what things are to be given to the baby.
Concept insight: Recall the various symptoms of a diseased person.
This is because immediately after suffering from malaria, the body is still weak, as during malaria a person has loss of appetite, vomiting and fever.
Moreover, the various organ systems are also most likely not properly recovered and the immune system is also comparatively weak. So, she is likely to get infected with chicken-pox herself which can lead to serious health problems.
Concept insight: Recall the types of diseases-communicable and non communicable diseases.
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